... DV,PDA,Mp3,Mp4,IPod, GPS 3)EnvironmentalProtection Solar Charger with Smart Protection Chip, Suitable for Mobile Phones and Digital ... functions Green, environmental friendly (can be charged by solar) Press test switch to check remaining capacity Suitable for ... charge and discharge circle, capacity remains more than 80% Smart protection chip: over-charging, over-discharge, overload, short-circuit ...